Caster-controller for wheeled plows.



PATEN TEDOGT. 29. 1907.

W. L. PAUL. OASI'EP. CONTROLLER FOR WHEELED PLOWS.

APPLICATION FILED SEPT.27|1906.

UNITED STATESPATENT OFFICE.

WILLIAM L. PAUL, OF PERU, ILLINOIS, ASSIGNOR TO PERU PLOW & WHEELCOMPANY, OF PERU, ILLINOIS, A CORPORATION OF ILLINOIS.

CASPER-CONTROLLER FOR WHEELED PLOWS.

Specification of Letters Patent.

Patented Oct. 29, 1907.

Original application filed June 13. 1906. Serial No. 321.561. Dividedand this application filed September 27,1906. Serial 110336.471.

To all whom it may concern:

Be it known that 1, WILLIAM L. PAUL, a citizen of the United States,residing at Peru, in the county of Lasalle and State of Illinois, haveinvented certain new and useful Improvements in Caster-Controllers forWheeled Plows, of which the following is a specification.

My invention relates to caster controlling means for Wheeled plows, andI provide a simple form of construction whereby the side draft tendencyof the plow and the forward thrust of the rear wheel is taken mainly bythe axle of the front furrow wheel and is not effective on the polewhile the plow is moving forward, and in turning the front and rearwheels are permitted to turn in unison and the plow may be backed, aswell as turned with a forward movement.

In the accompanying drawings which form a part of this specification Ihave illustrated the preferred embodi'ment of my invention, and on saiddrawings Figure 1 is a plan of a plow equipped with my improved castercontrolling means; and Fig. 2 is a detail plan view of a portion of thecaster controlling device.

The caster controlling mechanism comprises a thrust rod 10 connected atits rear end to a crank arm 11 rigid with the rear furrow wheelstandard, and at its forward end it passes through a sleeve 12 and hasits end turned down to enter a slot 13 in a plate 14 rigidly secured tothe front furrow wheel standard, The slotted plate extends away from thefront furrow wheel standard,

and is provided in its terminal portion with a semi circular slot 15.Sleeve 12 has pivoted thereto a link 16, having its end turned down toenter the semi-circular slot 15. A spring 17 is interposed between thelink 16 and the sleeve 12 normally tending to separate the forward endof the link 16 and the sleeve 12 and rod 10.

In operation and during the forward movement of the plow, thedown-turned end of rod 10 will be held in the inner end of slot 13,close to the caster wheel standard, so that the rod 10 becomespractically a rigid thrust member, the thrust being transmitted from therear caster wheel to the plate 14 near the furrow wheel standard, thethrust being sufficiently near the center to avoid side thrust on thepole or tongue 18. v In turning toward the right rod 16 will contactwith the rear end of the semi-circular slot 15, and, through the pullexerted on the cranked arm 11 on the rear wheel standard will cause saidwheel to turn in unison with the front furrow wheel, the forward end ofthe rod 10 traveling idly in slot 13. In turning in the oppositedirection the down-turned end of the rod 16 will contact with theopposite end of the semi-circular slot thus transmitting the thrust ofthe rod 10 which will turn the rear caster wheel in the proper directionand in :said front furrow vention, and without sacrificing any of itsbenefits.

This application is a division of my former application for wheeledplows, Serial Number 321,561, filed June 13, 1906.

I claim:

1. In a wheeled plow, a caster controller comprising a rigid rodeccentrically connected to the rear furrow wheel standard and connectedto the front furrow wheel standard, and an arm fastened to said rod,loosely connected to wheel standard, and adapted to be brought intoaction to shift said rod and thereby turn the rear furrow wheel onlyduring turning movements of the plow, substantially as described.

In a wheeled plow, a caster controller comprising a rigid rodeccentrically connected to the rear furrow wheel standard and looselyconnected to the front furrow wheel standard. and an arm fastened tosaid rod loosely connecl'cd to said front furrow wheel standard andadapted to be brought into action to shift said rod and thereby turn therear furrow wheel only during turning movements of the plow,substantially as described.

3. In a wheeled plow, a caster controller comprising a rigid rodeceentrically connected to the rear furrow wheel standard and looselyconnected to the front furrow wheel standard, and an arm pivoted to saidrod, loosely connected to said front furrow wheel standard, and adaptedto be brought into action to shift said rod and thereby turn the rearfurrow wheel only during turning moveinents of the plow, substantiallyas described.

.4. In a caster controller for wheeled plows, the combination of a rigidthrust rod eeeentrically connected to the rear furrow wheel standard, aplate having two slots secured to the front furrow wlieel standard, saidthrust rod having a part engaging one of said slots and being normallynear the vertical axis of the front furrow wheel standard (luringforward movement of the plow, and a link pivoted to said thrust rod andengaging the other slot, the ends of said slot being adapted to shiftsaid link and thereby the thrust rod and rear furrow wheel duringturning movements of the plow, substantially as described.

-5. In :1 controller for the rear furrow wheel of a wheeled plow, thefurrow wheels of which are mounted to turn on substantially verticalaxes, the combination of :1 rigid thrust rod eccentrieally connected tothe rear furrow wheel standard. a plate having two slots connected tothe front furrow wheel standard, said thrust rod having a part engagingoneof said slots and being normally near the axis of the front furrowwheel standard during forward movement of the plow, a link pivoted tosaid thrust rod and engaging the other slot, the ends of said slot beingadapted to shift said link and thereby the thrust rod and rear furrowwheel during turning movements of the plow, and a spring interposedbetween said thrust rod and link tending to separate the same,substantially as de scribed.

(i. In a wheeled plow, the combination of a rear furrowwheel standard, afront furrow-wheel standard, a plate connected to said frontfurrowavheel standard and adapted to turn therewith, said platehavingtwo slots, one 01' which is curved and lies adjacent to the end ofthe other, which is substantially straight, a rigid rod eccentricallyconnected to said rear t'urrmv-u'heel standard and having a portionfittingin said straight slot, and an arm pivoted to said rod near itsfront end and having a portion fitted in said curved slot. substantiallyas described.

7. In a wheeled plow, the combination with the furrow wheels mounted toturn on vertical axes and a controller for the rear furrow wheel,comprising a rigid rod eccentrically connected to the rear furrow wheelstandard and loosely connected to the front furrow wheel standard, saidlatter connection comprising two members, one of which is adapted toreceive the thrust of the rear furrow wheel during the forward movement,and the other of said members being adapted to come into action duringthe turning movement of the plow in either direction, substantially asdescribed.

WILLIAM L. PAUL.

Witnesses L. M ItIIOADIIS, Final) (1. Dnvnnmnx.

